*{
	margin: 0;
	padding: 0;
}
div,p,h1,h2,h3,h4,h5,h6,ul,ol,li,dl,dd,dt,
table,th,tr,td,tbody,thead,tfoot,form,input,img,a,span,i,
b,strong{
	margin: 0;
	padding: 0;
}

/* 有的浏览器是不识别语义标签的 */
/* header,nav,section,main,article,aside,figure,figcaption,footer{
	display: block;
} */

html,body{height: 100%;}



ul,li,ol{
	list-style: none;
}
i,em{
	font-style: normal;
}
h1,h2,h3,h4,h5,h6,b,strong{
	font-weight: normal;
}
a{
	text-decoration: none;
	cursor: pointer;
}
.clear_float::after{
	content:"";
	display: block;
	clear: both;
}
.clear_float{
	zoom: 1;
}
